{"product_id":"california-lock-and-security-equipment-c-28-contractor-licensing-exam-prep-book-reference-package","title":"California Lock And Security Equipment (C-28) Contractor Licensing Exam Prep Book Reference Package","description":"\u003ch1 style=\"color: #d32f2f;\"\u003eCalifornia Lock And Security Equipment (C-28) Contractor Licensing Exam Prep Book Reference Package\u003c\/h1\u003e\n\n\u003cp\u003ePrepare for the California Lock and Security Equipment (C-28) contractor licensing examination with a focused Book Reference Package covering planning and estimating, doors and hardware, mechanical locking systems, electronic locking systems, safes and vaults, video systems, fire-rated openings, life-safety hardware, electrical references, and job-site safety.\u003c\/p\u003e\n\n\u003cp\u003eThe California C-28 classification covers contractors who evaluate, set up, install, maintain, and repair doors and door assemblies, gates, locks and locking devices, panic and fire-rated exit devices, manual and automatic door and gate closures and releases, jail and prison locking devices, and permanently installed or built-in safes and vaults. The classification also includes master key systems, metal window guards, security doors, card-activated and electronic access control systems, control equipment, motion and other types of detectors, computer systems used for control and auditing, and associated security equipment.\u003c\/p\u003e\n\n\u003cp\u003eFire alarm systems are specifically excluded from the C-28 classification. Candidates should understand this distinction when studying the scope of work and evaluating which security and access-control activities fall within the classification.\u003c\/p\u003e\n\n\u003cp\u003eLock and security equipment work combines mechanical, electrical, electronic, hardware, access-control, life-safety, and door-system knowledge. A contractor may need to understand locks and cylinders, keying systems, hinges, closers, panic hardware, fire doors, access-control devices, wiring, electronic locking equipment, safes, vaults, video systems, and safe installation practices.\u003c\/p\u003e\n\n\u003cp\u003eThe C-28 contractor licensing examination is divided into six major subject areas: \u003cstrong\u003ePlanning and Estimating; Doors and Hardware; Electronic Locking Systems; Mechanical Locking Systems; Safes, Vaults, Security Containers, and Video Systems; and Safety\u003c\/strong\u003e. This reference package brings together California code materials, Door and Hardware Institute references, locksmithing resources, NFPA standards, electrical references, and Cal\/OSHA materials to support preparation across those subjects.\u003c\/p\u003e\n\n\u003cp\u003eThe California C-28 examination is a \u003cstrong\u003eclosed-book examination\u003c\/strong\u003e. The references in this package are intended for study before test day so candidates can strengthen technical knowledge, become familiar with terminology and hardware functions, and transition toward independent recall during examination preparation.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhat You Get\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalifornia Code References:\u003c\/strong\u003e 2025 California Building Code and 2025 California Fire Code.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoor and Hardware Institute References:\u003c\/strong\u003e Basic Architectural Hardware, Keying Systems and Nomenclature, Glossary of Architectural Hardware Terms, Lock Function Chart, and Installation Guide for Doors and Hardware.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocksmithing Reference:\u003c\/strong\u003e The Complete Book of Locks and Locksmithing, Seventh Edition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire Door and Life-Safety References:\u003c\/strong\u003e NFPA 80, Standard for Fire Doors and Other Opening Protectives, 2025, and NFPA 101 Life Safety Code or Life Safety Code Handbook, 2024.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Reference:\u003c\/strong\u003e Ugly's Electrical References.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety References:\u003c\/strong\u003e Cal\/OSHA General Industry \u0026amp; Electrical Safety Orders and Cal\/OSHA Construction \u0026amp; Electrical Safety Orders.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eExam Details\u003c\/h2\u003e\n\n\u003cp\u003eThe current California Contractors State License Board C-28 Lock and Security Equipment study guide applies to examinations scheduled on or after November 1, 2024. The examination is divided into six major sections:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlanning and Estimating:\u003c\/strong\u003e 24%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoors and Hardware:\u003c\/strong\u003e 18%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectronic Locking Systems:\u003c\/strong\u003e 20%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical Locking Systems:\u003c\/strong\u003e 20%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafes, Vaults, Security Containers, and Video Systems:\u003c\/strong\u003e 7%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety:\u003c\/strong\u003e 11%\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003ePlanning and Estimating\u003c\/strong\u003e represents approximately 24 percent of the examination and is the largest published category. Topics include plans and specifications, job-site surveys, system design, and project and material costs.\u003c\/p\u003e\n\n\u003cp\u003eCandidates should be comfortable reviewing plans and specifications before beginning installation or repair work. Door schedules, hardware requirements, opening conditions, security needs, access-control requirements, electrical pathways, and life-safety considerations can affect how a lock or security system is designed and installed.\u003c\/p\u003e\n\n\u003cp\u003eA job-site survey may involve inspecting existing doors, frames, gates, electrical conditions, locking hardware, clearances, mounting surfaces, access-control equipment, power availability, and the surrounding construction. Candidates should understand why accurate field information is important before selecting equipment or determining installation procedures.\u003c\/p\u003e\n\n\u003cp\u003eSystem design can involve matching mechanical and electronic hardware to the required security function. Candidates may need to understand how locks, cylinders, keys, exit devices, door closers, electric strikes, magnetic locks, access-control devices, detectors, and related equipment interact.\u003c\/p\u003e\n\n\u003cp\u003eEstimating preparation can include determining material quantities, hardware requirements, labor, replacement components, wiring needs, and other project costs. Candidates should be comfortable reading hardware information and connecting system requirements with the equipment needed to complete the work.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoors and Hardware\u003c\/strong\u003e represents approximately 18 percent of the examination. Topics include locks, hardware and closing devices, exit devices, and doors and frames.\u003c\/p\u003e\n\n\u003cp\u003eCandidates should understand the function of common architectural hardware, including hinges, locks, latches, closers, strikes, exit devices, and related door components. The Door and Hardware Institute handbooks in this package support preparation involving hardware terminology, functions, installation, and system relationships.\u003c\/p\u003e\n\n\u003cp\u003eDoors and frames should be considered as part of the complete opening. A lock may function poorly if the door is misaligned, the frame is damaged, the hinges are worn, or the closer is improperly adjusted. Candidates should understand how the condition of the opening can affect security hardware operation.\u003c\/p\u003e\n\n\u003cp\u003ePanic and fire-rated exit devices are especially important because they combine security with life-safety considerations. The California Building Code, California Fire Code, NFPA 80, and NFPA 101 support preparation involving fire-rated openings, exit hardware, door operation, and life-safety requirements.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eElectronic Locking Systems\u003c\/strong\u003e represents approximately 20 percent of the examination. Published topics include wiring, locking and operating devices and software, and controls, surveillance, and accessories.\u003c\/p\u003e\n\n\u003cp\u003eElectronic locking systems can involve electric strikes, electrically controlled locks, magnetic locking devices, access-control readers, request-to-exit devices, sensors, control panels, power supplies, and other connected components. Candidates should understand how these devices interact within an access-control system.\u003c\/p\u003e\n\n\u003cp\u003eWiring knowledge is important because electronic locking equipment depends on appropriate electrical connections and control circuits. Ugly's Electrical References supports preparation involving electrical terminology, basic calculations, conductors, circuits, and related field concepts.\u003c\/p\u003e\n\n\u003cp\u003eElectronic systems can also involve software and control functions. Candidates should understand the difference between devices that physically secure an opening and the systems that authorize, monitor, or record access.\u003c\/p\u003e\n\n\u003cp\u003eSurveillance and accessory topics can include equipment used to support security monitoring and control. The C-28 classification includes card-activated and electronic access-control systems, detectors, computer control systems, and associated equipment, but it specifically excludes fire alarm systems.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMechanical Locking Systems\u003c\/strong\u003e also represents approximately 20 percent of the examination. Topics include lock cylinders, key generation, lock bypass, and master key systems.\u003c\/p\u003e\n\n\u003cp\u003eCandidates should understand mechanical lock construction, cylinder operation, key terminology, keying relationships, lock functions, and methods used to service and maintain mechanical systems. The Complete Book of Locks and Locksmithing and the Door and Hardware Institute materials support preparation in these areas.\u003c\/p\u003e\n\n\u003cp\u003eKey generation requires understanding how keys correspond to locking components and how keying information is used during service work. Master key systems require additional attention because they organize access at multiple levels while maintaining control over individual openings.\u003c\/p\u003e\n\n\u003cp\u003eThe Door and Hardware Institute Keying Systems and Nomenclature reference can help candidates build familiarity with keying terminology and system structure, while the Lock Function Chart supports understanding of how different lock functions are applied to different openings.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSafes, Vaults, Security Containers, and Video Systems\u003c\/strong\u003e represents approximately 7 percent of the examination. Topics include safe installation and repair, vaults and other security containers, safe deposit locks, drilling or penetrating safes, and installing and repairing video systems.\u003c\/p\u003e\n\n\u003cp\u003eSafe and vault work requires candidates to understand the physical security purpose of these systems, their locking mechanisms, installation considerations, and appropriate repair methods. Permanently installed or built-in safes and vaults fall within the C-28 classification.\u003c\/p\u003e\n\n\u003cp\u003eVideo systems are also part of this examination category. Candidates should understand installation and repair concepts associated with security video equipment as it relates to the C-28 trade.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSafety\u003c\/strong\u003e represents approximately 11 percent of the examination. Published topics include personal protective equipment, power tools and equipment, and working safely in elevated areas.\u003c\/p\u003e\n\n\u003cp\u003eLock and security work can involve drilling, cutting, electrical exposure, ladders, elevated work, heavy doors, powered equipment, sharp metal edges, and active construction environments. Candidates should review safe practices for both service work and new installations.\u003c\/p\u003e\n\n\u003cp\u003eThe C-28 examination is multiple choice with four choices per question and one best answer. Some questions require mathematical computation, and a calculator is provided for applicable calculations.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eClosed Book Test\u003c\/h2\u003e\n\n\u003cp\u003eThe California Lock and Security Equipment (C-28) contractor licensing examination is a \u003cstrong\u003eclosed-book examination\u003c\/strong\u003e. No reference materials may be used during testing.\u003c\/p\u003e\n\n\u003cp\u003eThe books and standards in this package are intended to help candidates build technical knowledge before examination day. Early study can involve using the references to understand lock functions, keying terminology, door hardware, fire-rated openings, electrical concepts, access-control components, and safety requirements.\u003c\/p\u003e\n\n\u003cp\u003eAs preparation progresses, candidates should practice identifying hardware, interpreting terminology, explaining system functions, and solving technical questions without immediately consulting the books. This helps develop stronger recall for closed-book testing conditions.\u003c\/p\u003e\n\n\u003cp\u003ePlanning and Estimating represents approximately 24 percent of the examination and deserves substantial study attention. Electronic Locking Systems and Mechanical Locking Systems each represent approximately 20 percent, making them equally important areas of preparation.\u003c\/p\u003e\n\n\u003cp\u003eDoors and Hardware represents approximately 18 percent and should be studied alongside mechanical and electronic locking systems because the complete opening often determines whether security hardware functions correctly.\u003c\/p\u003e\n\n\u003cp\u003eSafety and the safes, vaults, security containers, and video systems category should also remain part of a balanced study plan.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eLicensing Steps\u003c\/h2\u003e\n\n\u003cp\u003eThe California Contractors State License Board administers the C-28 Lock and Security Equipment contractor classification. Applicants pursuing this classification must complete the qualification, application, examination, and license-issuance requirements that apply to their circumstances.\u003c\/p\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirm the C-28 classification.\u003c\/strong\u003e Determine that the lock and security equipment work you intend to perform falls within the California C-28 scope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeet applicable qualification requirements.\u003c\/strong\u003e The qualifying individual must satisfy the experience and qualification requirements associated with the requested classification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument qualifying work experience.\u003c\/strong\u003e Prepare the work-history information required through the contractor license application process.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubmit the contractor license application.\u003c\/strong\u003e Complete the required applicant, business, qualifier, classification, and supporting information.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete application review.\u003c\/strong\u003e CSLB determines which examinations and additional licensing requirements apply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepare for the C-28 trade examination.\u003c\/strong\u003e Study planning, doors and hardware, mechanical locking, electronic locking, safes and vaults, video systems, and safety.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepare for California Law and Business.\u003c\/strong\u003e Applicants required to test generally also prepare for the California Law and Business examination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete applicable examinations.\u003c\/strong\u003e Applicants required to test complete the examinations associated with their licensing path unless an applicable waiver applies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete license-issuance requirements.\u003c\/strong\u003e Finish applicable bonding, fingerprinting, workers' compensation documentation, fees, and other requirements associated with issuance.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eState Requirements\u003c\/h2\u003e\n\n\u003cp\u003eThe California C-28 classification covers evaluation, setup, installation, maintenance, and repair of doors, door assemblies, gates, locks, locking devices, panic and fire-rated exit devices, automatic and manually operated closures and releases, jail and prison locking devices, and permanently installed or built-in safes and vaults.\u003c\/p\u003e\n\n\u003cp\u003eThe classification also includes master key systems, metal window guards, security doors, card-activated and electronic access-control systems, control equipment, motion and other detectors, computer systems used for security control and auditing, and associated equipment.\u003c\/p\u003e\n\n\u003cp\u003eFire alarm systems are specifically excluded from the C-28 classification. Candidates should understand this limitation when studying the authorized scope of work.\u003c\/p\u003e\n\n\u003cp\u003eBecause many C-28 installations involve doors and means of egress, contractors should understand how hardware selection and installation interact with California building, fire, and life-safety requirements.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eReference Books\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2025 California Building Code. California Code of Regulations, Title 24\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eSupports preparation involving doors, openings, accessibility, means of egress, locking arrangements, hardware, and building requirements affecting security installations.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003e2025 California Fire Code. California Code of Regulations, Title 24\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eSupports preparation involving fire and life-safety requirements for doors, exits, locking arrangements, panic hardware, fire-rated openings, and emergency egress.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eDoor and Hardware Institute handbooks: Basic Architectural Hardware\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eSupports preparation involving common door hardware, hardware functions, components, terminology, and applications.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eDoor and Hardware Institute handbooks: Keying Systems and Nomenclature\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eSupports preparation involving keying terminology, master key systems, key hierarchy, cylinders, and access organization.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eDoor and Hardware Institute handbooks: Glossary of Architectural Hardware Terms\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eSupports preparation involving standard terminology used for doors, locks, closers, hinges, exit devices, frames, and architectural hardware.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eDoor and Hardware Institute handbooks: Lock Function Chart\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eSupports preparation involving different lock functions and the operational characteristics associated with common door and hardware applications.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eDoor and Hardware Institute handbooks: Installation Guide for Doors and Hardware\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eSupports preparation involving installation practices, doors, frames, locks, hardware, alignment, and proper operation of completed openings.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eThe Complete Book of Locks and Locksmithing, Seventh Edition\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eSupports preparation involving locks, cylinders, keys, master keying, locksmithing methods, security hardware, servicing, and troubleshooting.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eNFPA 80, Standard for Fire Doors and Other Opening Protectives, 2025\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eSupports preparation involving fire-door assemblies, opening protectives, hardware, inspection considerations, and fire-rated door operation.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eNFPA 101 Life Safety Code or Life Safety Code Handbook, 2024\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eSupports preparation involving life safety, means of egress, door operation, exit hardware, and other requirements affecting security-equipped openings.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eUgly's Electrical References\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eSupports preparation involving electrical terminology, conductors, circuits, calculations, wiring concepts, and electrical information relevant to electronic locking and access-control systems.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eCal\/OSHA General Industry \u0026amp; Electrical Safety Orders\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eSupports preparation involving workplace safety, electrical hazards, PPE, tools, equipment, and employee safety.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eCal\/OSHA Construction \u0026amp; Electrical Safety Orders\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eSupports preparation involving construction-site safety, ladders, elevated work, electrical exposure, tools, drilling, material handling, and installation hazards.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eTest Information and Study Materials\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrioritize Planning and Estimating.\u003c\/strong\u003e At approximately 24 percent, it is the largest examination category. Review plans, specifications, job-site surveys, system design, equipment selection, and project costs.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStudy mechanical and electronic systems separately.\u003c\/strong\u003e Each category represents approximately 20 percent of the exam. Build a clear understanding of cylinders, keys, master keying, lock bypass, wiring, electronic locking devices, access control, controls, and surveillance equipment.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStudy the complete door opening.\u003c\/strong\u003e Locks, hinges, frames, closers, exit devices, and door alignment all affect system operation. Avoid treating the lock as an isolated component.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eUse the Door and Hardware Institute materials to reinforce terminology.\u003c\/strong\u003e Accurate understanding of hardware names and functions can make technical questions easier to interpret.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReview fire-rated and life-safety openings.\u003c\/strong\u003e Use the California Building Code, California Fire Code, NFPA 80, and NFPA 101 to strengthen understanding of doors, exits, panic hardware, fire-rated openings, and egress.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eInclude basic electrical preparation.\u003c\/strong\u003e Electronic locking and access-control systems require an understanding of wiring and electrical concepts. Ugly's Electrical References supports this area.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo not overlook safes, vaults, and video systems.\u003c\/strong\u003e Although this category represents approximately 7 percent, it remains part of the examination and should be included in preparation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBuild closed-book recall.\u003c\/strong\u003e Use the references to learn unfamiliar concepts, then practice explaining lock functions, keying relationships, wiring concepts, door hardware, and safety procedures without consulting the books.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eHow 1 Exam Prep Helps You Reach Your Goal\u003c\/h2\u003e\n\n\u003cp\u003e1 Exam Prep supports California C-28 contractor candidates through organized study guidance, trade-focused review, practice-oriented preparation, reference navigation when applicable, and a structured approach to Lock and Security Equipment examination subjects.\u003c\/p\u003e\n\n\u003cp\u003eThe C-28 Book Reference Package helps divide a technical trade into manageable areas. Candidates can focus separately on Planning and Estimating, Doors and Hardware, Electronic Locking Systems, Mechanical Locking Systems, Safes and Vaults, Video Systems, and Safety.\u003c\/p\u003e\n\n\u003cp\u003eThe Door and Hardware Institute references help candidates build a stronger vocabulary for locks, doors, frames, closers, exit devices, keying systems, and architectural hardware. The Complete Book of Locks and Locksmithing supports deeper study of mechanical locks, cylinders, keys, servicing, and locksmithing methods.\u003c\/p\u003e\n\n\u003cp\u003eThe California Building Code, California Fire Code, NFPA 80, and NFPA 101 help candidates connect security hardware with fire protection, life safety, door operation, and means-of-egress considerations.\u003c\/p\u003e\n\n\u003cp\u003eUgly's Electrical References supports electronic locking preparation by reinforcing electrical terminology, wiring concepts, circuits, and practical electrical information.\u003c\/p\u003e\n\n\u003cp\u003eThe Cal\/OSHA references help candidates review PPE, tools, electrical exposure, elevated work, drilling, equipment, and construction-site safety.\u003c\/p\u003e\n\n\u003cp\u003ePractice-oriented preparation can include interpreting hardware terminology, matching lock functions to applications, reviewing master key relationships, tracing electronic locking components, evaluating door conditions, and identifying safe installation procedures.\u003c\/p\u003e\n\n\u003cp\u003eBecause the C-28 examination is closed book, 1 Exam Prep encourages candidates to progress from reference-supported study toward independent recall. The goal is to build an organized understanding of locks, doors, access control, hardware, electronic systems, life safety, security equipment, and safe work practices.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eFAQ\u003c\/h2\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eIs the California C-28 examination closed book?\u003c\/h2\u003e\n\n\u003cp\u003eYes. The California Lock and Security Equipment C-28 contractor licensing examination is a closed-book examination.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhat is the largest C-28 examination category?\u003c\/h2\u003e\n\n\u003cp\u003ePlanning and Estimating is the largest published category at approximately 24 percent.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eHow much of the C-28 exam covers electronic locking systems?\u003c\/h2\u003e\n\n\u003cp\u003eElectronic Locking Systems represents approximately 20 percent and includes wiring, locking and operating devices, software, controls, surveillance, and accessories.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eHow much of the C-28 exam covers mechanical locking systems?\u003c\/h2\u003e\n\n\u003cp\u003eMechanical Locking Systems represents approximately 20 percent and includes lock cylinders, key generation, lock bypass, and master key systems.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eDoes the C-28 examination cover doors and hardware?\u003c\/h2\u003e\n\n\u003cp\u003eYes. Doors and Hardware represents approximately 18 percent and includes locks, closing devices, exit devices, doors, and frames.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eDoes the C-28 exam cover safes and vaults?\u003c\/h2\u003e\n\n\u003cp\u003eYes. The examination includes safe installation and repair, vaults and other security containers, safe deposit locks, and drilling or penetrating safes.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eDoes the C-28 examination include video systems?\u003c\/h2\u003e\n\n\u003cp\u003eYes. Installing and repairing video systems is included within the Safes, Vaults, Security Containers, and Video Systems category.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eAre fire alarm systems included in the C-28 classification?\u003c\/h2\u003e\n\n\u003cp\u003eNo. Fire alarm systems are specifically excluded from the California C-28 Lock and Security Equipment classification.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhy are NFPA 80 and NFPA 101 useful for C-28 preparation?\u003c\/h2\u003e\n\n\u003cp\u003eThey support preparation involving fire-rated openings, door operation, exit hardware, means of egress, and life-safety requirements that can affect security-equipped doors.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhy are Door and Hardware Institute handbooks included?\u003c\/h2\u003e\n\n\u003cp\u003eThey support preparation involving architectural hardware terminology, keying systems, lock functions, door hardware, and installation practices.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhy is Ugly's Electrical References included?\u003c\/h2\u003e\n\n\u003cp\u003eElectronic locks and access-control equipment can involve wiring and electrical concepts. This reference supports electrical terminology, calculations, circuits, conductors, and related field knowledge.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eHow much of the C-28 exam covers safety?\u003c\/h2\u003e\n\n\u003cp\u003eSafety represents approximately 11 percent and includes personal protective equipment, power tools and equipment, and working safely in elevated areas.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eDoes the C-28 classification include access-control systems?\u003c\/h2\u003e\n\n\u003cp\u003eYes. The classification includes card-activated and electronic access-control systems, control equipment, detectors, computer control and audit systems, and associated equipment.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhy use reference books for a closed-book examination?\u003c\/h2\u003e\n\n\u003cp\u003eThe references help candidates build technical knowledge before testing. Candidates can study door hardware, locksmithing, electronic systems, fire-rated openings, electrical concepts, and safety before transitioning toward independent recall.\u003c\/p\u003e\n\n","brand":"1 Exam Prep","offers":[{"title":"Default Title","offer_id":50620802891833,"sku":null,"price":2145.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1789\/0861\/files\/CABOOKS-LOCK_SECURITY_C-28.jpg?v=1791391121","url":"https:\/\/1examprep.com\/products\/california-lock-and-security-equipment-c-28-contractor-licensing-exam-prep-book-reference-package","provider":"1 Exam Prep","version":"1.0","type":"link"}